Positioning device for tube frames



M h 10, 1925. V 7' 1,528,850

- w. w. ROBERTSON POSITIONING .navxca FOR TUBE FRAMES Filed ma 5, 1924 IIlllllllllll, vl llllllll I I INVENTOI? w M POBE/PTSON Patented Mar. 10,1925.

UNITED STATES PATENT OFFICE.

WILLIAM W. ROBERTSON, 0F WORCESTER, IIASSACI-IUSETTS, ASSIGNOR TOCROMP'ION & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, ACORPORATION OF MASSACHUSETTS.

POSITIONING DEVICE FOR TUBE FRAMES.

Application filed May 5, 1924. Serial No. 711,096.

To all 207mm it may concern:

Be it known that I, IVILLIAM W. ROBERT- SON, a subject of the King ofGreat Britain, residing at lVorcester, in the county of Worcester andState of Massachusetts, have invented a new and useful PositioningDevice for Tube Frames, of which the following is a specification.

This invention relates to looms of the Axminster type and particularlyto means for positioning the tube frames by which the yarn spools aresupported and the yarn is presented to the fabric.

It is the object of my invention to provide a simple construction bywhich the tube frames may be held from accidental engagement with thetube frame supporting device as the tube frames approach or recede fromoperative position.

In the preferred form, my invention acts as a spreader or positioner bywhich the tube frames are positively held away from accidentalengagement by the supporting device.

My invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claims.

A preferred form of the invention is shown in the drawing, in which Fig.1 is a front elevation of parts of an Axminster loom embodying myimprovements, and

Fig. 2 is a sectional side elevation taken along the line 22 in Fig. 1.

Referring to the drawings, I have shown a tube frame 10 mounted onchains 11 by which it is held and transported. Pulleys 12 are fixed on afreely rotatable shaft 13 and act as guides for the chains 11. Yarnspools 14; are mounted on the tube frames 10 in the usual manner and areprovided with center bearing supports 15. The shaft 13 has anintermediate bearing 16 depending from a cross frame 17 secured to theloom frame 18.

All ofthe parts thus far described are substantially of the usual typeand in themselves form no part of my invention which relatesparticularly to the provision of a positioning member or stand 20. Thismember 20 is shown in the form of a rod or bar which is in general ofsubstantially U-shape and which is provided with enthe middle portion ofthe tube frame out wardly, as indicated in Fig. 2, as the tube. frameapproaches operative position.

When in operative position, the tube frame is engaged by a supportingdevice 22 and the particular object of crowding or forcing the tubeframes outward is to positively prevent engagement of the supportingdevice 22 and a tube frame 10 or the spools 14 thereon, as the tubeframe approaches operative position. Such engagement has been heretoforemore or less common in wide looms in which the tube frames are of suchlength that there is a substan tial in the middle portion thereof.

When thus engaged, the parts are liable to injury and it is verydesirable that such engagement be positivel )revented. It will be notedthat while the member 20 engages and forces outward a tube frameapproaching operative osition, it is bent upward to clear a tube framewhile in operative position. It may also be bent out-ward to engage atube frame receding from operative position but this latter engagementis of less importance.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed otherwise than as setforth in .the claims but what I claim is I 1. In a loom, a plurality ofyarn tube frames, means to transport said frames to and from operativeposition, a supporting device by which successive frames are pre sentedto the fabric, and means engaging said tube frames between the endsthereof and crowding them from normal position to clear said supportingdevice as they approach operative position.

2. In a loom, a plurality of yarn tube frames, means to transport saidframes to and from operative position, a supporting device by whichsuccessive frames are presented to the fabric, and fixed means to holdsaid frames from engagement by said supporting device until they are inoperative position.

3. In a loom, a plurality of yarn tube f ames, means to transport saidframes to and from operative position, a supporting device by whichsuccessive frames are presented to the fabrics, and means effective todisplace said tube frames outward between their points of attachment tosaid transporting means.

f. In a loom, a plurality of \tUIl tube frames, means to transport saidframes to and from operative position, a supporting device by whichsuccessive frames are presented to the fabric, said tube frames hav ingcenter'bearings for yarn spools, and a fixed member engaging one of saidcenter bearings of each frame and forcing the a.- sociated tube framefrom proximity to said supporting device as it movestoward operativeposition.

In a loom, a plurality of yarn tube frames, means to tarisport saidframes to and from operative position, a supporting; device by whichsuccessive frames are presented to the fabric, said tube frames havingcenter bearings for yarn spools, and a fixed member engaging one of saidcenter bearings of each frame and forcing; the associated tube framefrom proximity to said supporting device as it moves toward operativeposition.

6. In aloom, a plurality of yarn tube frames, means to transport saidframes to and from operative position, a supporting device by whichsuccessive frames are presented to the fabric, said tube frames havingcenter bearings for yarn spools, and a fixed member engaging one of saidcenter bearings of each frame and forcing the associated tube frame fromproximity to said supporting device as it moves toward and as it recedesfrom operative position.

I. In a loom, a pli'irality of yarn tube frames, means to transport saidfran'ies to and from operative position, said means including a shaft,pulleys on said shaft and chains for said tube frames guided by saidpnlle; and a positioningdevice encircling said shaft and forcing saidframes apart as they approach ope 'ative position.

in testimony whereof I have hereunto aliixed my signature.

XVILLIAM XV. ROBERTSON.

